These guidelines were developed as part of ongoing preparedness for all hazards. They are intended to support fire, emergency medical services, and hospital staff in the medical management of patients if an incident occurs involving a fourth generation agent (FGA, also known as A-series or Novichok nerve agents), such as the one used in the United Kingdom in 2018.
https://chemm.nlm.nih.gov/nerveagents/FGA_Medical_Management_Guidelines_508.pdf